GoKawiilApple details cryptographic chain behind iPhone 18 Pro's Reference Image mode
Apple published a Security Research blog post explaining how its new Reference Image camera feature, launching on the iPhone 18 Pro, verifies that photos are authentic from the moment they're captured. The system creates a secure digital negative with signed metadata and timestamps inside Apple's Private Cloud Compute environment, and uses a sensor-level trust chain with revocation lists to flag compromised hardware or fraudulent images.